摘要
针对160km/h速度等级动力集中动力车,采用SIMPACK软件建立了整车动力学计算模型,对比分析了JM_3和LM_A踏面与60kg/m钢轨匹配时的动力车稳定性;基于振动模态,结合一系纵向刚度,分析了踏面磨耗过程中等效锥度变化对整车稳定性的影响,发现当车轮踏面等效锥度从0.01增大到0.5,在临界速度达到最高时,动力车失稳模态由车体侧滚转变为驱动摇头,随后临界速度下降。结果表明,采用JM_3踏面动力车能获得更好的稳定性。
In this paper,the dynamic model of the 160 km/h power car is established by SIMPACK software.The vehicle stabilities that JM3 and LMA profile match with the 60 kg/m rail profile are compared and analyzed.Considering the primary suspension longitudinal stiffness,the influence of the change of equivalent conicity during the tread profile wear process on the car stability is analyzed and studied based on the vibration mode.When tread profile equivalent conicity increase from 0.01 to 0.5,the power car linear critical speed increase at first and then decrease when and the unstable mode changes from carbody roll to driving equipment yaw.The results indicate that better stability will be achieved by adopting the JM_3 profile.
作者
闫兆盈
罗贇
陈国胜
邓小星
YAN Zhaoying;LUO Yun;CHEN Guosheng;DENG Xiaoxing(Traction Power State Key Laboratory,Southwest Jiaotong University,Chengdu 610031 Sichuan,China;State Key Laboratory of High Power AC Drive Electric Locomotive,Zhuzhou 412001 Hunan,China)
出处
《铁道机车车辆》
北大核心
2018年第4期42-45,共4页
Railway Locomotive & Car
关键词
动力车
稳定性
踏面外形
振动模态
power car
stability
tread profile
vibration mode
